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69 条记录 (耗时 0.034 秒)

    Phase transfer process with catalyst recovery
    33.
    发明授权
    Phase transfer process with catalyst recovery 失效
    催化剂回收相转移过程

    公开(公告)号：US06300431B1

    公开(公告)日：2001-10-09

    申请号：US09466520

    申请日：1999-12-17

    申请人： Hsien-Chang Wang ,  Chia Shian Chee ,  W. S. Winston Ho

    发明人： Hsien-Chang Wang ,  Chia Shian Chee ,  W. S. Winston Ho

    IPC分类号： C08F208

    CPC分类号： B01D61/362 ,  B01J14/00 ,  B01J19/2475

    摘要： A process for catalytic recovery in a phase transfer process wherein heterogeneous reactions in a liquid-liquid two phase reaction systems using a phase transfer catalyst is improved by separating the two liquid phases with a membrane which retains the catalyst while passing the aqueous polar liquid thereby allowing easy recovery of the phase transfer catalyst. The reaction is carried out between reactants selectively soluble in the different phases, one of the reactants being transferred into the other phase by means of a phase transfer catalyst which is soluble in said polar liquid phase with the one reactant. The phases are separated after completion of the reactions by adding water to the two-phase reaction system to dissolve out the polar liquid phase containing the phase transfer catalyst into an aqueous phase. Further, the phase transfer catalyst is separated from the polar liquid phase by passing the aqueous polar liquid phase through a membrane that retains the transfer catalyst while passing the polar liquid.

    摘要翻译： 在相转移过程中催化回收的方法，其中使用相转移催化剂的液 - 液两相反应体系中的非均相反应通过用保留催化剂的膜分离两个液相而改善，所述膜通过极性极性液体从而允许 容易回收相转移催化剂。 该反应在选择性溶于不同相的反应物之间进行，其中一种反应物通过相转移催化剂转移到另一相中，所述相转移催化剂可溶于所述极性液相中的一种反应物。 通过向两相反应体系中加入水以将含有相转移催化剂的极性液相溶出到水相中，在反应完成后分离各相。 此外，通过使极性液相通过保持转移催化剂的膜，同时通过极性液体，将相转移催化剂与极性液相分离。

    Graft copolymers containing ionomer units
    35.
    发明授权
    Graft copolymers containing ionomer units 失效
    含离聚物单元的接枝共聚物

    公开(公告)号：US6060563A

    公开(公告)日：2000-05-09

    申请号：US862630

    申请日：1997-05-23

    申请人： Dennis G. Peiffer ,  Hsien-Chang Wang ,  Pamela Jean Wright ,  Joseph A. Sissano ,  Lewis J. Fetters ,  Louise M. Wheeler ,  Rebecca L. Rucker

    发明人： Dennis G. Peiffer ,  Hsien-Chang Wang ,  Pamela Jean Wright ,  Joseph A. Sissano ,  Lewis J. Fetters ,  Louise M. Wheeler ,  Rebecca L. Rucker

    IPC分类号： C08G81/02 ,  C08F257/00 ,  C08F257/02 ,  C08F259/00 ,  C08F259/02

    CPC分类号： C08G81/021

    摘要： Graft copolymers having cationic units pendant to the backbone chain are disclosed. These polymers are prepared by reacting a polymer containing halogenated paramethylstyrene units in the chain, e.g., a brominated copolymer of isobutylene and para-methylstyrene, with an anionically polymerized polymer made using an organolithium initiator compound having the formula R.sub.1 R.sub.2 Z R.sub.3 --Li where R.sub.1 and R.sub.2 are alkyl radicals, R.sub.3 is a direct link or an organic radical and Z is nitrogen or phosphorous. Reaction of the anionically polymerized polymer having an R.sub.1 R.sub.2 Z R.sub.3 --end group with the halogenated polymer leads to graft polymers coupled by a quaternary ammonium or phosphonium groups.

    摘要翻译： 公开了具有垂直于主链的阳离子单元的接枝共聚物。 这些聚合物通过使链中含有卤代对甲基苯乙烯单元的聚合物例如异丁烯和对甲基苯乙烯的溴化共聚物与使用具有式R1 R2 Z R3-Li的有机锂引发剂化合物制成的阴离子聚合聚合物反应制备，其中R 1 R2为烷基，R3为直链或有机基团，Z为氮或磷。 具有R1R2Z R3-端基的阴离子聚合聚合物与卤化聚合物的反应导致通过季铵或鏻基团偶联的接枝聚合物。

    Process for oxidative functionalization of polymers containing alkylstyrene
    36.
    发明授权
    Process for oxidative functionalization of polymers containing alkylstyrene 失效
    含烷基苯乙烯的聚合物的氧化官能化方法

    公开(公告)号：US5814707A

    公开(公告)日：1998-09-29

    申请号：US868544

    申请日：1997-06-04

    申请人： Jean M.J. Frechet ,  Shah A. Haque ,  Hsien-Chang Wang

    发明人： Jean M.J. Frechet ,  Shah A. Haque ,  Hsien-Chang Wang

    IPC分类号： C08F8/00 ,  C08F8/06 ,  C08F212/08

    CPC分类号： C08F8/06 ,  C08F2800/10 ,  C08F2810/50

    摘要： This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar liquid medium with an organic hydroperoxide oxidizing reagent in the presence of a catalytically sufficient amount of a chromium compound, to oxidize a portion of the aromatic alkyl groups of the polymer to an oxygen containing functional group.

    摘要翻译： 本发明提供了一种含烷基苯乙烯的聚合物可以在苯乙烯类单体的伯苄基碳原子官能化官能化的方法。 本发明的方法包括在催化足够量的铬化合物存在下，用有机氢过氧化物氧化试剂处理溶解在非极性液体介质中的含烷基苯乙烯的聚合物，以将一部分芳族烷基氧化成 该聚合物与含氧官能团。

    Process for oxidative functionalization of polymers containing alkylstyrene
    37.
    发明授权
    Process for oxidative functionalization of polymers containing alkylstyrene 失效
    含烷基苯乙烯的聚合物的氧化官能化方法

    公开(公告)号：US5679748A

    公开(公告)日：1997-10-21

    申请号：US628416

    申请日：1996-04-05

    申请人： Jean M. J. Frechet ,  Shah A. Haque ,  Hsien-Chang Wang

    发明人： Jean M. J. Frechet ,  Shah A. Haque ,  Hsien-Chang Wang

    IPC分类号： C08F8/00 ,  C08F8/06 ,  C08F212/08

    CPC分类号： C08F8/06 ,  C08F2800/10 ,  C08F2810/50

    摘要： This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar liquid medium with an organic hydroperoxide oxidizing reagent in the presence of a catalytically sufficient amount of a chromium compound, to oxidize a portion of the aromatic alkyl groups of the polymer to an oxygen containing functional group.

    摘要翻译： 本发明提供了一种含烷基苯乙烯的聚合物可以在苯乙烯类单体的伯苄基碳原子官能化官能化的方法。 本发明的方法包括在催化足够量的铬化合物存在下，用有机氢过氧化物氧化试剂处理溶解在非极性液体介质中的含烷基苯乙烯的聚合物，以氧化一部分芳族烷基 该聚合物与含氧官能团。

    Propylene polymer compositions having improved impact strength
    39.
    发明授权
    Propylene polymer compositions having improved impact strength 失效
    丙烯聚合物组合物具有改善的冲击强度

    公开(公告)号：US5597866A

    公开(公告)日：1997-01-28

    申请号：US497486

    申请日：1995-06-30

    申请人： Donald A. White ,  Hsien-Chang Wang ,  Dongming Li

    发明人： Donald A. White ,  Hsien-Chang Wang ,  Dongming Li

    IPC分类号： C08L23/10 ,  C08L23/28 ,  C08L51/06 ,  C08L23/22

    CPC分类号： C08L23/10 ,  C08L23/283 ,  C08L51/06

    摘要： Crystalline propylene polymer compositions having improved impact strength and improved clarity are disclosed. The composition is prepared by melt blending a propylene polymer, e.g., polypropylene, and from about 1 to 35 wt % of an elastomeric interpolymer of a C.sub.4 to C.sub.8 isomonoolefin, e.g., isobutylene, and a para alkystyrene comonomer, e.g., para-methylstyrene. The interpolymer preferably contains a benzylic functional group such as halogen (bromine). The composition may also contain from about 0.5 to 15 wt % of the amide reaction product of an organic acid-grafted propylene polymer, e.g., maleic anhydride grafted polypropylene, and a polyfunctional primary amine.

    摘要翻译： 公开了具有改进的冲击强度和改进的透明度的结晶丙烯聚合物组合物。 该组合物通过熔融共混丙烯聚合物如聚丙烯和约1至35重量％的C4至C8异单烯烃（例如异丁烯）和对甲氧基苯乙烯共聚单体例如对甲基苯乙烯的弹性互聚物来制备。 互聚物优选含有苄基官能团如卤素（溴）。 组合物还可以含有约0.5至15wt％的有机酸接枝的丙烯聚合物例如马来酸酐接枝聚丙烯和多官能伯胺的酰胺反应产物。

    Intervulcanized elastomer blends
    40.
    发明授权
    Intervulcanized elastomer blends 失效
    互相硫化弹性体共混物

    公开(公告)号：US5473017A

    公开(公告)日：1995-12-05

    申请号：US305547

    申请日：1994-09-14

    申请人： Hsien-Chang Wang

    发明人： Hsien-Chang Wang

    IPC分类号： C08K3/22 ,  B60C1/00 ,  C08C19/20 ,  C08F8/00 ,  C08K5/14 ,  C08K5/40 ,  C08L7/00 ,  C08L9/00 ,  C08L11/00 ,  C08L21/00 ,  C08L23/16 ,  C08L23/20 ,  C08L23/22 ,  C08L23/26 ,  C08L13/00

    CPC分类号： C08L21/00 ,  B60C1/0008 ,  C08L23/22 ,  C08L23/26 ,  Y10S525/912

    摘要： Intervulcanized compositions having improved curing efficiency are prepared by the free radical curing of a mixture of an ethylenically unsaturated diolefin polymer such as natural or synthetic rubber and a saturated or low unsaturation polymer such as an isobutylene/para-methylstyrene copolymer which contains functional groups pendant to the polymer chain. These functional groups contain an olefinic or vinyl double bond positioned alpha, beta to a substituent group which activates the double bond towards free radical addition reactions with the diolefin polymer. Preferred functionality includes benzylic ester functionality represented by the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, and R.sub.4 is selected from hydrogen, C.sub.1 to C.sub.28 alkyl, aryl or C.sub.2 to C.sub.28 alkenyl.

    摘要翻译： 具有改进的固化效率的硫化组合物通过烯属不饱和二烯烃聚合物如天然或合成橡胶和饱和或低不饱和聚合物如异丁烯/对甲基苯乙烯共聚物的混合物的自由基固化来制备，所述异丁烯/对甲基苯乙烯共聚物含有垂饰于 聚合物链。 这些官能团含有与取代基α，β的烯属或乙烯基双键，其活化与二烯烃聚合物的自由基加成反应的双键。 优选的功能包括由以下结构表示的苄酯官能团：其中R2和R3独立地选自氢或C1至C6烷基，R4选自氢，C1至C28烷基，芳基或C2至C28烯基。